Collins Chinese Dictionary Plus (3rd edition), 2011:
crystal [ˈkrɪstl]
I n
1
[c]
(=mineral) 结(結)晶体(體) jiéjīngtǐ [个 gè]
2
[c/u]
(in jewellery) 水晶 shuǐjīng
3
[u]
(=glass) 晶质(質)玻璃制(製)品 jīngzhì bōli zhìpǐn
II cpd
复合词
[+ glass, vase] 水晶 shuǐjīng